Liquid sprayer



Get. 19,1926. 1,603,987

' c. SCHINDLER LIQUID SPRAYER Filed may 17, 1926.

Patented Oct. 19, 1926.

LS E PATENT oFF onannnssonrnnnnrt, ornronnn fonio.

LIQUID srnaYEn. i

Applieatibn filed May17.

of s ra er-head and manner ofattachin to the pump, which sprayer-head by thedischarge of air therethrough will eflect a drawing of the liquid from the receptacle and a discharge of the-liquid in fine spray form, and will also preventthefobjectionable dripping of th-eliquid from the liquid nozzle either during use orjwhile theinstrument is at rest, a feature which isso objectionable ininstrumentslof this type comrnonly used;

Q The invention is fully described in the following specification, "anda -preferred embodiment thereof illustrated in the accompanying drawings, ingwhich l Figure 1 1s a side elevation of a device embodying the invention with a part broken away, and Fig. 2 is an enlarged central longitudinal sectional view of the spray-head and of portions of the liquid tube and the pump end with which associated.

Referring to the drawing, 1 designates a pump cylinder in which a plunger 2 operates. An operating'stem or rod 3 projects from the plunger through the inner end of the cylinder 1 and carries a handle 4: at its outer end. The forward end 5 of the cylinder is closed, except fora centrally disposed opening 6 therein. A container or reoeptacle 7 for the liquid to be sprayed is attached in any suitable mannerto the underside of the forward end portion of the cylinder. j a The spray-head embodying the invention comprises an outer nozzle 8, preferably formed from sheet metal andbeing cylindrical in cross-section with its outer end enlarged and adapted to project through and fit into the opening 6 in the pump end 5,

while its outer end is gradually restricted and provided with the discharge orifice 9. The inner end of the nozzle 8, after being projected through the opening 6, is formed with the outwardly projected radial flange 10 for engagement with the inner marginal edgewall of said opening, while'the portion 1926'. Serial 110,1 9,458.

of the nozzle immediately wit-houtthe openingis radially expanded in annular form both to engagetheouter marginal edge wall of the opening 6 inopposition to the flange 10, wherebyto firmly retain the nozzle 8 against movement within said opening, and also toprovide anannular recess 11 within the inner end portion of the nozzle.

The inner nozzle 12 of the sprayer-head is also-preferably formed from sheet metal andis providedat its forward end with the restricted discharge orifice 13 in axial alignment witlrbut of less diameter than the discharge orifice ofthe nozzle 8; Theno'zzle 12, which may be termed the airnozzle,

iisi flared outwardlyfrom its forward to its inner end, s0 that its inner end preferably terminates in a radially projecting edge portion adaptedto fit into the recess 11 of the nozzle 8 It is evident that the inner expanded edge of'thenozzle 12 is placeclwitliin the inner end of "the nozzle 8 before such end has been given the ogee formation shown, and that thereafter the inner end of the nozzle Sisshaped to form the external annular groove into whichthe edge wall of the opening 6'projects;

A tube 14 for supplying liquid to the interior of the sprayer-head from the container 7 has its lower end opening intothe con tainer near its bottom and its upper end opening into the bottomportion of the nozzle 8 through a side opening therein in which the upper end of the tube, in the present instance, is shown as being fitted.

It is apparent that the discharge of air from the nozzle 12 and outwardly through the orifice 9 ofthenozzle 8, which discharge is effected by an operating of the plunger 2, will create a suction action. within the nozzle 8 and tube 14 so as to cause a drawing of the liquid upward from the container 7 into the nozzle 8 where it is caught up by the discharging air and discharged from the nozzle 8 in finely broken up spray form.

The termination of the tube 14 within the nozzle 8 prevents the liquid from dripping from the outer end of the tube 14 and running down the outer side thereof when spraying operation is discontinued. and also which occurs when the instrument is lying idle and change in temperature conditions efiects an expansion of the air and consequent pressure within the container. In the present case, liquid that may ooze from the discharge end of the tube 14 is retained Within the nozzle '8 and is discharged therefrom in atomized or spr 'avif'orni Wh'en'the presses before being attached to tlieg.zpuinp. I

This .iinsures accurate spacing and aligning and-"prevents the parts fronrjgetting adjustment. .7

[It is found in practice that th isioTm of nozzle is inexpensive :in its constructioir and .OUt of the parts thereof may be easily'andiquiekly assembled; thereby iadaptingi itvforiruse in connection w ith athe inexpensive z'zfiormsvo't spr'aymg lHStfiU'IlE-fillS a commonly rsold Liter household 'usei'or 'thespraylng: of llqulds 'for the" killing 'of fiies and other insects I 1 wish it understood that my invention is no-t rlimited to anyspecificrconstruction, arrangement or-form of the parts,: as at is capable I of :modifications and numerous changes Without "departing vfrom thespirit oil the: claims.

Having thus describedmy 'lIlVBIltlOIl,"Wll21t I claim as'n'ew and desire to secure -byiLetters Patent is: Y v,

1. In an instrument "of the class described,

.a pump end Wall having =anfiopeni'11gtherein, a liquid'container'connectedrto said wall, a. sprayer-head projecting dro'm the Wall opening and having anouter nozzle fixed in .theopening and provided with an internal recess near its inner end and having a discharge orifice at its outer end, an inner nozzle having its rear end terminating in a radially projecting edge portion'fitting in said recess and having its outer end terminating in a discharge orifice which is 'sinallerthan and in coaxial register With the dischargeiorifioe-of the outer nozzle, and af tube zopen ing :communication between the interior or; the container-and the interior of di outer nozzle. 2min an instrument'of the class described, ainnairpump' having an end Wall Witlran opening therein,. a liquid container attached toisaidcpump an outer sprayer head :no'zzle havin a discharge orifice atiits forward-send rand: having itsi'nner end larger than said orifice with. its edge Wall of ogeeI formito "provide 1 adj acenti inner and 1011 1161. annular recesses, the outer recess receiving the. edge Wall of-saidlr pump end opening, an inner nozzle Within-the "outer nozzle and having a radially:projectinginnerend edge portion "fitting ithin the. internal recess of the outer: nozzle and terminating at itslforwvard endin a dis'charge orifice Whichfis in axial alignment With andrestricted -'With. respect to the discharge orifice of the outer nozzle, and a liquid supply tube leadin g from the "interior of the container 'to a the interior of said outer nozzle. v V

In testimony-whereof. I have hereunto "signed my name to this specification.

- GHARLES- SGHINDIQER. 

